Cutting-off mechanism.



B. K. FORD.

CUTTING-OFF MECHANISM.

APPLICATION FILED JAN. 27, 1912.

1 ,05 9 ,046, Patented Apr. 15, 1913.

4 SHEETSSHEET 1.

WITNESSES:

//V VE IV TOR B'. K. FORD.

CUTTING-OFF MECHANISM.

APPLICATION FILED JAN. 27. 1912.

1 ,O59,046, Patented Apr. 15, 1913 4 SHEETS-SHEET 2 WITNESSES: IN VE N TOR B. K. FORD.

GUTTING-OFF MECHANISM.

APPLICATION FILED JAN. 27, 1912 Patented Apr. 15, 1913.

4 SHEETSSHEET 3 INVENTOH BY W J7. '7 a b u ATTORNEY BQ/W Emmy m J N B. K. FORD.

CUTTING-OFF MECHANISM.

urucuxon FILED JAN. 21, 1912.

Patented Apr. 15, 1913.

4 SHEETS-SHEET 4 UNITED STATES PATENT OFFICE.

BEN K. FORD, OF DETROIT, MICHIGAN, ASSIGNOR TO DETROIT CAN COMPANY, OF DETROIT, MICHIGAN, A CORPORATION OF NEW JERSEY.

CUTTING-OFF MECHANISM.

Specification of Letters Patent.

Patented Apr. 15, 1913.

To all whom it may concern Be it known that I, BEN K. FORD, a citizen of the United States, and a resident of Detroit, in the county of lVayne and State of Michigan, have invented a new and useful Cutting-Off Mechanism, of which the following is a specification.

This invention relates to means for the cutting into' proper lengths of tubes of paper, straw-board or other suitable material, and its object is to provide a cutting-off mechanism which will be simple in construction, reliable in operation, and which can be easily and accurately adjusted.

This invention comprises, in addition to the main tube machine, a novel cylinder mounted thereon, means to revolve the same, means to control its revolutions, a cutting tool mounted eccentrically to the cylinder and carried thereby, and means to return the tool to normal position after it has moved longitudinally of the cylinder during its cutting operation, together with proper driving means for the cylinder and cutting tool.

In the accompanying drawings, Figure 1 is a side elevation of a tube-winding machine equipped with my novel cutting-01f mechanism. Fig. 2 is a rear-end elevation of the same. Fig. 3 is a section on the line 3-3 of Fig. 2, on a larger scale. Fig. 4 is an end elevation of a support for the drum. Fig. 5 is a plan of the cutting-oil mechanism. Fig. 6 is a detail of the releasing mechanism.

Similar reference characters refer to like parts throughout the several views.

The tube-winding mechanism shown in Fig. 1 forms no part of the present invention but is the subject matter of a co-pending application. While this t-ube-windin machine will be generally described, it wil be understood that the novel cutting-off mechanism can be used with tube-machines of any other desired construction. The tube-machine bed 1 sn ports a head-frame 2, which carries the tubular mandrel 3. A main shaft 4 is mounted'in the bearings 5 on the head-frame, in the bearings 6 on the pedestals 7, and in the bearings 8 on the frame 30 of the cutting-off mechanism. The columns 9 are piyotally mounted on the pedestals. On thefshaft 4 is secured gear 10, and slidable on this shaft are the worms 11, which mesh with the worm-gears 12 on the shafts 13, which drive the pulleys 14 and belts 15 of the tube winding mechanism. Any desired number of these pedestals, columns and belts may be employed, depending upon the number of wraps of tube material to be used. They are shift-able along the bed, the pedestals being secured in any desired manner. The worms 11 are slidable on the shaft 4 and on the long spline 17. A motor 19 may be mounted on a bracket 18,\which motor carries a pinion 20, meshing with the ear 10 on the main shaft. The columns may connected by means of links 21, and their angular position relative to the mandrel may be adjusted by the nut 22 on the screw 23. A bracket 24 carries screws 25, which are the pivots of the ring 26 in which the nut 23 is mounted. A handwheel 27 may be formed on one end of this nut so that the same may be turned freely.

On the upper end of the frame 30 of the cutting-off mechanism is formed a plate 31, upon which a table 32 is slidable. As shown in'Fig. 3, this table has a socket 33 in which is pivoted a pin 34 connected to the nut 35. nut and is mounted in the plate 31 and provided with any desired turning means, such as the handle 37. By means of this screw 36 the table 32 may be moved in and out to adjust the cutting tool with reference to the mandrel. Guides 38 are formed on the sides of the table and, together with plates 39 and screws 40, serve to hold the table rigidly in (position on the plate 31, after it has been a 'usted by means of the screw 36. These small screws 40 also determine the an le between the cuttin tool and the tube. xtending upwardly rom the table are two frames 42, each provided with a cap 43 as shown inFig. 4, which frames and ca s together form cylindrical bearings for t e drum 45. This drum has flanges 46, 47, 48 and 49 which prevent any longitudinal movement in the frames. Between the flanges 46 and an exterior flange 50 is a pulley 51, upon which the belt 52, shown in ig. 1, travels. A tubular bracket 53 is mounted on the frame 30 and carries a shaft 54 which is also journaled in a second bracket 55, within the frame 30 as shown in Fig. 2. The worm 44 on the main shaft 4 11165185 with'the worm-gear 56 on the shaft 57, which is 'ournalcd in a bracket 58 on this frame, 30. n the inner end of this shaft 57 A screw 36 extends through this is a spiral gear 59 which meshes with a similar spiral gear 60 on the shaft 54, so thatthe pulley 61 on the outer end of the shaft 54 will be driven. An arm is pivoted on the shaft and carries a tightenerpulley 62 which runs against the belt 52. A depending arm 64 is engaged by the spring 66 which holds the pulley .62 so firmly against the belt 52 that the latter is kept sutiiciently tight to turn the drum 45 when free to revolve.

Mounted in the drum 45 are heads 7 0 having bushings 71, which are the bearings for the arbor 72. This arbor has collars 73 which prevent longitudinal movement. A pulley 74 on the inner end of the arbor carries a belt 75, which passes around a pulley 76 on the main shaft 4. An arm 77 carries a.

tightener-pulley 78 which is held against the belt 75 by means of the spring 79. which connects to the arm 80 formed integral with the arm 77. It will be understood that ballbearings or any other proper anti-friction devices may be employed at all points where found desirable on this machine.

The cutting-off tool may be of any desired construction, formed with a serrated or smooth edge, as desired. It is shown in Fig. 3 as the thin disk 82 mounted between the collars83 on a sleeve 84, which is slidable on the arbor 72 and carries a key 83 which is slidable in the key-seat 86. shown in Fig. 5. This sleeve has collars 87 between which the forked ends of the arm 88 extend. which arm is pivotally mounted on the sliding rod 89 being held in position by the collar 91. A nut 90 may be employed to firmly grip the cutting tool to th sleeve 84.

The caps 43 are provided with apertures in which the rods 89 and 92 are slidable.

- while the rod 93 is rigidly mounted in the outer frame 42. This rod 93 supports brace 94, shown in Fig. 1. in whose outer endthe rod 92 is guided. This rod 92 carries '1 plate 95 on its outer end. The rod 93 also carries a support 96 for the tube-guide 97.

A cross-bar 98 is connected to the rods 92 and 89 arid carries the stem 99.

Projecting upward from the table 32 are lugs 100 and 101. to which are pivoted the stop-arms 102 and 103, which are spring held to the left in Fig. 1. On the collar 49 on the drum is formed a stop-lug 104 which may engage the shoulder 105 on the arm 102. while on the collar 47 is a similar lug 106 which may engage the shoulder 107 on the arm 103. The lug 106 is preferably between ninety and one hundred eighty degrees in advance of the lug 104.

In the free end of themross-bar 98 is mounted a pin 108 having a beveled end. so it may ride over the upper inclined end of the stop-arm 103, and a face as shown inFig. .6. The pin is positioned by the fiat spring 110, secured in place by screws 111.

A-collar 112 is secured to the stem 99, and has an arm 113 which will engage the upper end of the stop arm 102 when the cross-bar 98 is moved outward. The springs114 may be used to return the stop arms, while the spring 115 will return the arm 88 and cutter 82 to the normal position shown in Fig. 5.

The operation of this mechanism is as follows: The parts being in the position shown inFigs. 1, 2, 3 and 5 of the drawings, the screw 36 is turned to carry the cutting-off mechanism to a proper distance from the tube as it is wound. The stop-lug 106 is in engagement with the shoulder 107, and the arbor 72 is central above the axis of the drum 45. When the finished tube reaches the plate 95, this plate, together with the rod 92. the cross-bar 98, the pin 108, the stem 99. the rod 89, the arm 88 and the cutter will be moved outward, that is, toward the right in Figs. 1, 3 and 5. The pin 108 will immediately swing the stop-arm 103 to the right. moving the shoulder 107 out of the pathof the lug 106 on the drum, thus releasing the drum and permitting it to be turned by the belt 52 until the lug 104 engages the stop arm 102. Such turning carries the arbor and the cutter toward the tube which will be severed by the cutter. If the cutter were at right angles to the tube, or if the outer end of the arbor were nearer the tube than the inner end, then the cutting edge of the cutter would always engage the edges of the tube. As soon as the tube is severed. the outer end falls and the push of the tube is against the cutter. But by so positioning the arbor that the cutter end is farther from the tube than its inner end. the engagement of the tube with the side of the cutter will be on a line connecting the centers of the tube and cutter. The tearing up of the edge of the tube will thus be avoided. This adjustment of the arbor may be made'by means of the screws 40. After the tube has been sevcred. the pressure of the end of the tube against the cutter will move the cutter outward, and with it, the arm 88, the rod 89.

cross-bar 98, stem 99 and collar 112, until the arm 113 on this collar engages the second stop-arm 102. When this engagement occurs. the arm 102 will release the lug 104, again permitting the belt 52 to turn the drum until the stop-lug 106 engages the shoulder 107. During this partial revolution the cutter is moved out of the path of the tu e to its normal position. As soon as the tuoe no longer engages the cutter, the

spring 115 returns the rods 89 and 92, the

cross-bar 98 and the cutter to their inner positions. It will thus be seen that the intermittent turning of the drum 45 carries the cutter toward and from the tube.

Because of the movement of the arbor in a cylindrical path, the distance between the shaft 4 and the arbor will vary, so the belt ,75 is also provided with means to keep it suficiently tight, which means comprise the pulley 78. For the same reason, the arm 88 is forked where it extends over the sleeve 84 and is pivotally mounted on the rod 89. When the pin 108 has passed the arm 103,

the latter will be swung back to normal position by its spring 114, ready with its shoulder 107 in the path of the lug 106. When the spring 115 returns the parts to normal position, the inclined end of the pin 108 freely rides up on the inclined upper end of the arm 103. The collar 112 is adjustable on the stem 99 so that the time that the cutter is in engagement with the end of the tube can be accurately determined.

The details of construction of the various parts may all be varied by skilled designers without departing from the spirit of my invention as set forth in the claims.

I claim.

1. In a cutting-ofl mechanism, the combination of a revolving arbor, a cutter mounted thereon, a drum in which said arbor is eccentrically mounted, means to revolve said arbor, and means to intermittently revolve the drum.

2. In a cutting-off mechanism for tube machines, the combination of a revolving arbor, a tube-cutter slidably mounted thereon, a drum in which said arbor is eccentrically mounted, means to revol e said arbor, means to intermittently revolve the drum. and means in the path of the tube to cause the drum to move the cutter toward the manufactured tube.

3. In a cutting-off mechanism for tube machines, the combination of a revolving arbor, a tube-cutter mounted thereon, a drum in which said arbor is eccentrically mounted, means to revolve said drum, stopping mechanism under control of the manufactured tube for regulating the movement of said drum, and means to revolve said arbor.

4. In a cutting-off mechanism for tube machines, the combination of a revolving arbor, a tube cutter mounted thereon, a drum in which said arbor is eccentrically mounted, means to revolve said arbor, and means to revolve the drum to carry the cutter into and out of engagement with the tube.

5. In a cutting-off mechanism for tube machines, the combination of an intermittently revoluble drum, means to revolve the same, a plurality of stops for said drum, an arbor eccentrically mounted in said drum, a cutter slidable on the arbor, and means under control of the manufactured tube for moving the cutter along the arbor and for alternately moving the stops out of engaging position. J

6. In a cutting-01f mechanism for tube machines, the combination of a revolving arbor, a tube-cutter slidably mounted thereon. a drum in which said arbor is eccentrically mounted, means to revolve said arbor, a frame in which said drum is mounted, means to intermittently revolve the drum to carry the cutter toward and from the manufactured tube, a support for the frame, and means for adjusting the frame on said support.

7. Ina cutting-off mechanism, the combination of a driving shaft, a pulley thereon, a revoluble drum, an arbor 'eccentrically mounted in said drum, a pulley on said arbor, a belt extending around said pulleys on the arbor and on the shaft, means to maintain tension on said belt during the movement of the arbor by reason of the turning of said drum, means to control the revolution of said drum, a cutting tool mounted on said arbor, and means to revolve the drum,

8. In a cutting-0d mechanism for tube machines, the combination of an intermittently revoluble drum, means to revolve the same, a plurality of stop-lugs on said drum, stop arms mo'unted adjacent said drum for engagement with each stop, an arbor eccentrically mounted in said. drum, a cutter slidable on the arbor, and means under control of the manufactured tube for moving the cutter, along the arbor and for alternately swinging the stop-arms out of the paths of the stop-lugs on the drum to permit the drum to carry the cutting tool into and out of engagement with the tube.

9. In a cutting-off mechanism for tube machines, the combination of a revolving arbor, a tube cutter slidably mounted thereon, a drum in which said arbor is eccentrically mounted, means for revolving said arbor and said drum, a frame in which said drum is mounted, a table to support said frames, a plate upon which said table is slidably mounted, and a screw for moving said table on said plate to vary the distance between the central lines of the drum and of the manufactured tube. V

10. In a cutting-off mechanism for tube machines, the combination of a revolving arbor, a tube cutter slidably mounted thereon, a drum in which said arbor is eccentrically mounted, means to revolve said arbor and said drum, stop-lugs formed on said drum, stop-arms pivoted adjacent said drum and adapted to engage said stop-lugs to control the revolution of the drum, frames in which said drum is mounted, a slidable rod mounted in said frames and having a plate at its outer end adapted to be engaged y the end of the manufactured tube where-.

by said rod will be moved longitudinally of the drum, and means connected to said rbd for disengaging the stop-arms successively to permit the drum to revolve to carry the cutter into engagement with the manufactured tube, and then to carry it out of engagement with said tube, an arm connected to said cutter and to said rod for slidin the cutter on its arbor at the same longitu inal speed as the tube.

11. In a cutting-Ofi mechanism for tube machines, the combination of an arbor, a cutting tool slidable thereon, means to move said cutter in a complete circular path, means actuated by the manufactured tube for sliding the cutter on its arbor at the same longitudinal s eed as the tube, and means for stopping t e cutter in its circular mgzement when out of engagement with the tu 12. In a cutting-oil mechanism for tube machines, the combination of a cutting tool, means to revolve the same, means to move said tool in a complete circular path into and out of engagement with the manufactured tube, and means for alternately stopping the,cutter in its circular movement will)? in and out of engagement with said tu In testimony whereof I have signed this specification in the presence of two subscribing witnesses. r 1

BEN K. FORD.

' Witnesses: DAVID L. RIcmnnsoN, C. A. MCCANDLISH. 

